First of all, thanks for your feedback - really appreciate you trying it out and taking the time to offer your thoughts. Regarding your points:
1. I'll check the search tonight and add some tests to cover it, thanks for letting me know.
2. Agreed regarding the design - could do with some improvements. I'll tweak it.
3. The reason there's a notes icon is because I'm planning to have other icons there too (I'm considering a few options but perhaps bookmarks, contacts, files, etc - that kind of thing). Doesn't really need to be there now, admittedly, but it shouldn't be too long until there are other sections.
